EP3566830A1 - Rasieranordnung und haarschneidegerät - Google Patents

Rasieranordnung und haarschneidegerät Download PDF

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Publication number
EP3566830A1
EP3566830A1 EP18171816.4A EP18171816A EP3566830A1 EP 3566830 A1 EP3566830 A1 EP 3566830A1 EP 18171816 A EP18171816 A EP 18171816A EP 3566830 A1 EP3566830 A1 EP 3566830A1
Authority
EP
European Patent Office
Prior art keywords
supporting arm
guard
shaving assembly
hair
tooth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18171816.4A
Other languages
English (en)
French (fr)
Inventor
Robert Godlieb
Johannes Tseard Van Der Kooi
Martinus Bernardus Stapelbroek
Albert Jan Aitink
Everhardus Johannes Hoexum
Ramachandra Ganesh Rao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips NV filed Critical Koninklijke Philips NV
Priority to EP18171816.4A priority Critical patent/EP3566830A1/de
Priority to PCT/EP2019/056755 priority patent/WO2019179969A1/en
Priority to JP2020550067A priority patent/JP7209732B2/ja
Priority to US16/981,337 priority patent/US11318629B2/en
Priority to EP19712496.9A priority patent/EP3768476B1/de
Priority to RU2020134858A priority patent/RU2769367C1/ru
Priority to ES19712496T priority patent/ES2904247T3/es
Publication of EP3566830A1 publication Critical patent/EP3566830A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3846—Blades; Cutters

Definitions

  • Embodiments of present disclosure generally relate to home appliance, and more specifically, to a shaving assembly and a hair cutting appliance comprising the shaving assembly.
  • trimmers or clippers for shaving and grooming facial hairs are designed to cut the hairs at a certain distance from the skin.
  • Some close shaving trimmers have been proposed to use a modified construction to enable hair cutting at a much closer distance from the skin. Normally, close shaving trimmers relies on thinner guard-teeth. Further, for achieving an effective and comfortable trim, complex rounding features and other features may also be needed.
  • CN106346519A discloses an appliance where a thin and flat metal sheet with guard teeth or hair-catching cut-outs is stretched over a molded base.
  • This type of appliance is usually cheaper as it can be simply constructed from a flat sheet of thin foil.
  • such an appliance usually leads to clogging of cut hair at the angulated guard tooth slots. Such clogging issue may especially be caused by relatively long hairs being stuck or wedged in the tilted portion of the slot. In this case, the catching of subsequent hairs will be hindered or even completely stopped.
  • Embodiments of the present disclosure provide a shaving assembly with an anti-clogging blocking member and a hair cutting appliance comprising the shaving assembly.
  • a shaving assembly comprising: a supporting arm extending in a first direction; a cutting element comprising at least one moving tooth arranged along the first direction; a guard foil extending in the first direction and surrounding the cutting element, the guard foil comprising: a contact surface and a bent part, wherein the contact surface is adapted to be in contact with skin, and the bent part extends in the first direction for fixing the guard foil on the supporting arm, and wherein an angle between the contact surface and the supporting arm is an acute angle, and at least one guard tooth slot formed across the contact surface and the supporting arm and arranged along the first direction, wherein the guard tooth slot is adapted to direct hair to the moving tooth when the guard tooth slot is moved against the hair, wherein the shaving assembly further comprises: a blocking member extending between the moving tooth and the supporting arm in a second direction that is substantially perpendicular to the contact surface, wherein the blocking member is adapted to facilitate hair being released from the guard tooth slot when the guard tooth slot is moved against the hair.
  • the blocking element can effectively push or eject the cut hairs out of the tooth slot, which reduces the possibility of the hair clogging occurring at the guard tooth slots, thereby enabling a continuous and comfortable shaving.
  • the supporting arm comprises at least one groove arranged along the first direction and corresponding to the at least one guard tooth slot, wherein an end of the guard tooth slot extends to a bottom of the groove and an opposite end of the guard tooth slot extends to the moving tooth.
  • the blocking member comprises a first blocking part extending between the moving tooth and the supporting arm in the second direction and comprising a surface facing the guard tooth slot.
  • the first blocking part may apply an additional force via the surface to push the cut hair out of the slot, when the guard tooth slot is moved against the hair. In this case, the release of the stuck hair no longer just relies on the force applied by the subsequent hair. In this way, the hair can be easily released from the slots.
  • an end of the first blocking part is connected to a root associated with the moving tooth, and an opposite end of the first blocking part is separated from an inner wall of the supporting arm by a first distance. In this way, the maintained first distance can reduce the friction generated between the opposite end of the first blocking part and the inner wall of the supporting arm during the movement of the moving tooth.
  • the blocking member further comprises at least one second blocking part extending between the moving tooth and the supporting arm in the second direction, wherein the second blocking part is oriented substantially perpendicular to the first blocking part.
  • the at least one second blocking part comprises two second blocking parts arranged at different sides of the first blocking part. The second blocking parts additionally provide two side walls, which help to maintain the orientation of the cut hair by limiting the movement freedom of the cut hair, in the first direction. In this way, the cut hair can be properly manipulated by the side walls before it is released out of the slot.
  • an end of the second blocking part is connected to the moving tooth and an opposite end of the second blocking part is separated from an inner wall of the supporting arm by a second distance.
  • the maintained second distance likewise can reduce the friction generated between the opposite end of the second blocking part and the inner wall of the supporting arm during the movement of the moving tooth.
  • the opposite end of the second blocking part has a surface matching with an inner wall of the supporting arm. In this way, the almost entire inner space defined by an angulated portion can be filled with the second blocking part, which further decreases hair clogging possibility
  • the surface extends along the inner wall of the supporting arm and beyond a bottom of a groove of the supporting arm, the groove corresponding to the guard tooth slot. In this way, the cut hair can be continuously manipulated by the side walls before it is completely released out of the slot.
  • an end of the first blocking part is connected to a bottom of a groove of the supporting arm, the groove corresponding to the guard tooth slot, and an opposite end of the first blocking part is separated from the moving tooth by a third distance.
  • an end of the second blocking part is connected to a finger associated with a groove of the supporting arm, the groove corresponding to the guard tooth slot, and an opposite end of the second blocking part is separated from the moving tooth by a fourth distance.
  • the blocking member can be connected to the supporting arm, instead of the moving tooth, which reduces the weight of the moving tooth. Meanwhile, the original design of the cutting element will be not affected.
  • the blocking member is integrally formed with the moving tooth. In some embodiments, the blocking member is integrally formed with the supporting arm. Such integrally formed blocking member may ease the fabrication and assembly of the shaving assembly, and meanwhile improving the overall stiffness.
  • a hair cutting appliance comprises: a shaving assembly according to the first aspect of the present disclosure; and a driving mechanism configured to cause a movement of the cutting element inside the shaving assembly.
  • the hair cutting appliance comprising the anti-clogging shaving assembly according to various embodiments of present disclosure avoids the hair clogging occurring at the slots, and thereby the discomfort and discontinuousness occurred during the user's shaving can be eliminated. Meanwhile, the simple design and easy fabrication makes such cutting appliance cost-effective.
  • FIG. 1A illustrates an exploded view of a shaving assembly 100 according to various embodiments of the present disclosure.
  • the shaving assembly 100 generally comprises a guard foil 3, a cutting element 2, and a base comprising two supporting arms 1.
  • the length direction of the shaving assembly 100 is referred to a "first direction” X
  • the height direction of the shaving assembly 100 is referred to a “second direction” Z
  • the width direction of the shaving assembly 100 is referred to a "third direction” Y.
  • the first direction X and the third direction Y are perpendicular to each other and jointly define a horizontal plane XY.
  • the second direction Z is substantially perpendicular to the horizontal plane XY.
  • the two supporting arms 1 extend in the first direction X and are tilted with respect to the third direction Y by a certain angle.
  • the cutting element 2 also extends in a first direction X and comprises multiple moving teeth 21 that are arranged along the first direction X.
  • the guard foil 3 can be stretched to surround the cutting element 2 via a bend of a part of the guard foil 3 with respect to an axis along the first direction X.
  • the guard foil 3 comprises a contact surface 31 and a bent part 38.
  • the contact surface 31 is adapted to be in contact with skin of a user, and the bent part 38 extends in the first direction X for fixing the guard foil 3 on the supporting arm 1.
  • the guard foil 3 can be supported or suspended on the supporting arm 1, thereby forming an inner space 320 of the shaving assembly 100 as illustrated in FIG. 1B .
  • the inner space 320 can be used to accommodate the driving mechanism 300 for causing the movement of the cutting element 2, as illustrated in FIG. 1C .
  • the contact surface 31 may be substantially flat. In some other embodiments, the contact surface 31 may include some additional surface features (such as, curved features) to enhance the shaving comfort. In some other embodiments, the whole contact surface may be even constructed as a curved surface to meet some specific requirements.
  • guard tooth slots 37 are arranged along the first direction X.
  • the guard tooth slots 37 are formed across both the contact surface 31 and the supporting arm 1.
  • those guard tooth slots 37 are formed at the corner or angulated part that is formed by the contact surface 31 and the supporting arm 1.
  • Those guard tooth slots 37 correspond to the moving teeth 21 and can be used to direct hair to the moving teeth 21 when the guard tooth slot 37 is moved against the hair during the operation.
  • the supporting arm 1 may comprise multiple grooves 11. Those grooves 11 are likewise arranged along the first direction X and corresponding to the guard tooth slots 37.
  • one end 371 of the guard tooth slot 37 extends to a bottom 111 of the groove 11, and the opposite end 372 of the guard tooth slot 37 extends to the moving tooth 21.
  • an angulated guard tooth slot 37 is formed. In this way, the hairs, especially long hairs, can be easily guided into the slots 37 to arrive at the cutting position of the moving teeth 21 in a substantially vertical orientation, or in other words, in the second direction Z).
  • an acute angle ⁇ is formed between the contact surface 31 of the guard foil 3 and the supporting arm 1.
  • the inventors have found that in association with the structure of the shaving assembly 100, a potential clogging may occur at the angulated guard tooth slots 37, and especially at the tilted portion of the guard tooth slot 37 attached along the supporting arm 1.
  • the angulated guard tooth slots 37 will increase the possibility that the long hair is stuck or wedged at the tilted portion of the guard tooth slots 37.
  • the dimension of the slot along the first direction X is normally designed to be in the same order of the diameter of a hair to enable an effective cutting, which also attributes to the hair wedge.
  • a thick slot is formed, which also attributes to the hair wedge.
  • FIGs. 3A-3B schematically illustrate the clogging generating process caused by the cut hair in the shaving assembly 100.
  • the hair 201 has been cut and stuck at a guard tooth slot 37.
  • the previously cut and stuck hair 201 may not be easily released or pushed out of the slot just via the force generated by the subsequent hair.
  • the applied force by the subsequent hair may not be sufficient enough to bring the stuck hair 201 out of the slot. This is because the interaction force between soft hairs is usually weak.
  • FIG. 4 schematically shows an internal view of the shaving assembly with the formed hair clogging.
  • the cut hair 201 may not be able to position itself properly. Rather, it may fall over to cross two neighboring moving teeth 21 in a substantially horizontal direction. This would even worsen the clogging.
  • the shaving assembly 100 as shown in FIGs. 1A-4 is further equipped with an anti-clogging blocking member 40.
  • the blocking member 40 extends between the moving tooth 21 and the supporting arm 1 in the second direction Z that is substantially perpendicular to the flat contact surface 31.
  • the blocking member 40 may facilitate hair 201 being released from the guard tooth slot 37 when the guard tooth slot 37 is moved against the hair 201.
  • the blocking member 40 can be integrally formed with the moving tooth 21 as an extension of the moving tooth 21.
  • the blocking member 40 may be made from same material as that of the moving tooth 21.
  • the blocking member 40 can be made from, for example, plastic to reduce the overall cost and weight.
  • FIG. 5 shows a perspective view of the blocking element 40 attached to the moving teeth 21.
  • the blocking member 40 may comprise a first blocking part 41.
  • the first blocking part 41 extends between the moving tooth 21 and the supporting arm 1 in the second direction Z and comprises a surface 411 facing the guard tooth slot 37.
  • the blocking part 41 may apply an additional force via the surface 411 to push the cut hair 201 out of the guard tooth slot. In this case, the release of the stuck hair no longer just relies on the force applied by the subsequent hair as discussed above. As such, the hair 201 can be easily released from the slots 37.
  • first blocking part 41 has two ends 412 and 413 opposite to one another.
  • the end 412 can be connected to a root 211 associated with the moving tooth 21, and the opposite end 413 can be separated from an inner wall of the supporting arm 1 by a first distance (not shown). That is, the opposite end 413 is not directly contacted with the inner wall of the supporting arm 1. This avoids the friction between the opposite end 413 and the inner wall of the supporting arm 1 generated during the movement of the cutting element 2.
  • the blocking member 40 may further comprise at least one second blocking part 42 which also extends between the moving tooth 21 and the supporting arm 1 in the second direction Z.
  • the second blocking part 42 may be oriented substantially perpendicular to the first blocking part 41 to form a side wall.
  • the second blocking part 42 may comprise two second blocking parts arranged at different sides of the first blocking part 41, respectively, to form two side walls.
  • Such side walls facilitate limiting the movement freedom of the cut hair, and especially the movement freedom along the first direction X. In this way, the cut hair can be properly manipulated by the side walls before it is pushed out of the slot by the first blocking part 41. With the help of the second blocking parts 42, the cut hair 201 crossing the slot as illustrated in FIG. 4 can be effectively avoided.
  • one end 422 of the second blocking part 42 may be connected to the moving tooth 21 and the opposite end 423 of the second blocking part 42 may be separated from an inner wall of the supporting arm 1 by a second distance h.
  • the second distance h is clearly illustrated in FIG. 7 .
  • the second distance h likewise avoids the friction between the opposite end 423 and the inner wall of the supporting arm 1 generated during the movement of the cutting element 2.
  • the opposite end 423 of the second blocking part 42 has a surface 421 matching the inner wall of the supporting arm 1, as can be seen from FIGs. 6 and 7 .
  • the surface 421 may follow the profile of the inner wall of the supporting arm 1, so that the almost entire inner space defined by the angulated portion (when viewed from side) can be filled with the second blocking part 42, which further decreases hair clogging possibility.
  • the surface 421 of the second blocking part 42 may extend along the inner wall of the supporting arm 1 and beyond the bottom 111 of the groove 11 of the supporting arm 1. In this way, the cut hair can be continuously manipulated by the side walls before it is completely released out of the slot.
  • the blocking member 40 can be connected to the supporting arm 1 as an extension of the supporting arm 1, instead of being connected to the moving tooth 21 as illustrated in FIGs. 5-7 .
  • the end 412 of the first blocking part 41 can be connected to the bottom 111 of the groove 11 of the supporting arm 1. Accordingly, the opposite end 413 of the first blocking part 41 can thus be separated from the moving tooth 21 by a third distance (not shown).
  • the blocking member 40 can be integrally formed with the supporting arm 1 as an extension of the supporting arm 1.
  • the end 422 of the second blocking part 42 can be connected to a finger 112 associated with the groove 11 of the supporting arm 1.
  • the finger 112 is clearly illustrated in FIG. 4 . Accordingly, the opposite 423 end of the second blocking part 42 can be separated from the moving tooth 21 by a fourth distance (not shown).
  • FIGs. 8A-8C schematically illustrate how the hair clogging is prevented by the blocking element.
  • the hair 201 has been cut and stuck at a guard tooth slot.
  • the previously stuck hair 201 now can be pushed out of the slot by the blocking element, so that the catching of subsequent hairs will not be hindered.
  • the previously stuck hair would always have been already pushed out. Thereby, enabling a continuous and comfortable shaving behavior, with no need to stop and clean the stuck hair in the middle of the shaving.
  • the hair clogging that may potentially occur at the slots can be effectively reduced and even eliminated, which enables comfortable and continuousness shaving.
  • the simple design and easy fabrication of such anti-clogging shaving assembly makes it easy to be integrated with currently available close shaving trimmers.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP18171816.4A 2018-03-23 2018-05-11 Rasieranordnung und haarschneidegerät Withdrawn EP3566830A1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP18171816.4A EP3566830A1 (de) 2018-05-11 2018-05-11 Rasieranordnung und haarschneidegerät
PCT/EP2019/056755 WO2019179969A1 (en) 2018-03-23 2019-03-19 Shaving assembly and hair cutting appliance
JP2020550067A JP7209732B2 (ja) 2018-03-23 2019-03-19 シェービングアセンブリ及び毛切断器具
US16/981,337 US11318629B2 (en) 2018-03-23 2019-03-19 Shaving assembly and hair cutting appliance
EP19712496.9A EP3768476B1 (de) 2018-03-23 2019-03-19 Rasieranordnung und haarschneidegerät
RU2020134858A RU2769367C1 (ru) 2018-03-23 2019-03-19 Бритвенный блок и устройство для срезания волос
ES19712496T ES2904247T3 (es) 2018-03-23 2019-03-19 Conjunto de afeitado y aparato para cortar pelo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18171816.4A EP3566830A1 (de) 2018-05-11 2018-05-11 Rasieranordnung und haarschneidegerät

Publications (1)

Publication Number Publication Date
EP3566830A1 true EP3566830A1 (de) 2019-11-13

Family

ID=62152441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18171816.4A Withdrawn EP3566830A1 (de) 2018-03-23 2018-05-11 Rasieranordnung und haarschneidegerät

Country Status (1)

Country Link
EP (1) EP3566830A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11318629B2 (en) * 2018-03-23 2022-05-03 Koninklijke Philips N.V. Shaving assembly and hair cutting appliance

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151965A (en) * 1937-04-05 1939-03-28 Clipshave Inc Hair clipper
CN106346519A (zh) 2016-10-12 2017-01-25 吴让攀 一种往复式电动剃毛刀头

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151965A (en) * 1937-04-05 1939-03-28 Clipshave Inc Hair clipper
CN106346519A (zh) 2016-10-12 2017-01-25 吴让攀 一种往复式电动剃毛刀头
WO2018068353A1 (zh) * 2016-10-12 2018-04-19 吴让攀 一种往复式电动剃毛刀头

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11318629B2 (en) * 2018-03-23 2022-05-03 Koninklijke Philips N.V. Shaving assembly and hair cutting appliance

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